In [55]: a = 5 In [56]: b = 6 In [57]: (a, b) = (b, a) In [58]: a Out[58]: 6 In [59]: b Out[59]: 5
如何交换a和b的值在内部工作?它肯定不使用临时变量.
python tuples python-internals iterable-unpacking
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